The Delhi Electricity Regulatory Commission (DERC) on Thursday approved a power tariff hike of 8.32 per cent for all three private power distribution companies — BSES Rajdhani Power Limited (BRPL), BSES Yamuna Power Limited (BYPL) and Tata Power Delhi Distribution Limited (TPDDL) — in the city for financial year 2014-15.

Power bills of 80 per cent consumers will, however, come down as DERC withdrew a surcharge of up to 8 per cent for the next three months. In New Delhi Municipal Council area, power rates have gone up by 9.52 per cent.

Bills of those consuming less than 800 units is expected to reduce since power purchase cost adjustment charges (PPAC), which formed 6%-8% of a consumer’s bill, has been done away with until November. “For instance, while consumption rates up to 400 units have been hiked by 2.5 per cent, their bills will come down by up to 5 per cent as PPAC has been withdrawn until November. Monthly tariff for over 80 per cent of domestic consumers whose consumption does not exceed 800 units will come down,” an official said.

The exact rates may vary in areas under BSES Rajdhani Power Ltd, BSES Yamuna Power Ltd and Tata Power Delhi Distribution Ltd as PPAC for each discom varies.

Those consuming up to 200 units a month will have to pay Rs 4 instead of current Rs 3.90 per unit while rates between 201 and 400 units have been increased from Rs 5.80 to Rs 5.95 per unit. The rate for units between 401 and 800 have been hiked to Rs 7.30 per unit from Rs 6.80 per unit.

A new slab of 801-1,200 units has been created, and those consuming power in this category will have to pay Rs 8.10 per unit against the current Rs 7. The per unit rate beyond 1,200 units has been fixed at Rs 8.75.

For commercial consumers, DERC hiked power rates by up to 11 per cent but the bill for ‘common areas’, such as lifts or parking spots in a colony, will be fixed under the 200-unit slab. Earlier, common areas were charged under the highest slab. “In a relief to housing societies, the regulator has decided to charge domestic rates for common areas as against current charge of highest commercial category,’’ the official said.